The Siemens 3RV6011-1KA15 is a SIRIUS motor protection circuit breaker in the S00 frame, rated 12.5 A operational current with a CLASS 10 trip characteristic. It provides thermal overload and magnetic short-circuit protection in a single device, sized for the compact 45 mm width that fits standard 35 mm DIN rail per DIN EN 60715 — no extra panel cutout needed. Rated for 690 V at AC-3 duty and 50/60 Hz, this breaker handles motor starting currents up to that voltage class. The thermal overload release follows a CLASS 10 curve, meaning it trips within 10 seconds at 7.2× the current setting — tight enough to protect standard induction motors during a stalled-rotor condition without nuisance tripping on a normal start. Mounting position is unrestricted, and the screw-type terminals accept 2×(0.5…1.5 mm²) solid or 2×(0.75…2.5 mm²) stranded — common panel wire sizes. The 7 W typical power loss at full load is manageable inside a sealed enclosure, but group multiple units and check the internal temperature rise against the -20 to +60 °C operating range.
S00 frame and panel fit
The 3RV6011-1KA15 measures 96 mm deep, 45 mm wide, and 97 mm tall. The S00 frame is the smallest in the SIRIUS breaker family, so it leaves room for auxiliary contact blocks or a separate 24 VDC control transformer on the same DIN rail. Clearance requirements: 50 mm above and below, 30 mm to the side, and zero forward or backward — tight against the backpanel. Snap-on mounting onto 35 mm DIN rail per DIN EN 60715 is standard; screw fixing is also supported for vibration-prone installations. The any-position mounting means you can orient it vertically or horizontally inside the gland plate area without derating the trip curve.
Lifecycle and compliance
Shock resistance is rated at 25 g for 11 ms per IEC 60068-2-27, and surge voltage withstand is 6 kV — figures that support installation in industrial panels subject to mechanical stress and switching transients.
The transverse auxiliary switch design and screw-type terminals for the auxiliary/control circuit match the standard SIRIUS accessory range. If you need to add a remote trip indication or a shunt trip, the same auxiliary blocks that fit the 3RV2 series also fit this S00 frame. Maximum switching frequency at AC-3 is 15 cycles per hour — enough for a pump or fan start once every four minutes, but not for high-cycling applications like a stamping press or rapid-index conveyor. For those, step up to a larger frame or a contactor with a higher rated operating frequency.